Onkyo HTP 670 Service Manual

Page 1

HTP-670

Ref. No. 4157

ONKYO SERVICE MANUAL °72°°9

7.1-CH HOME THEATER SPEAKER PACKAGE

Front Speakers (L / R)
"SKF-670"

MODEL HTP-670(B)

$8

Surround Speakers (L / R)
"SKR-670"

Center Speaker
"SKC-670"

"SKB-670"

Black model

B MDC 120V AC, 60Hz
B MMO 220-240V AC, 50/60Hz

SAFETY-RELATED COMPONENT
WA R N I N G ! !

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.

MAKE LEAKAGE-CURRENT 0R RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE To THE CUSTOMER.

ONKYO®

IMAGINATIVE SIGHT SI SOUND

Surround Back Speakers (L / R)

Powered Subwoofer
"SKW-770"

/

\

Page 2

ADJUSTMENT PROCEDURE

SKW-770 : POWERED SUBWOOFER / ADJUSTMENT OF IDLING CURRENT

[When]

1. Exchange transistors (Q505 - Q519).

2. Exchange MAIN PC board ass'y (NAAF-8829).

[Procedure]

No speaker load and No input signal.

1. Short test point P631 for amplifier is under active mode.

2. Adjust the trimming resistor R544 so that the reading of multimeter becomes 52 ohm to 53 ohm.

3. Connect the DC voltmeter to test point P531.

4. Connect the power cord into the AC outlet.

5. Press POWER button to turn on the unit. (MMO version)

6. Confirm the voltage of above point after 6 minutes to 8 minutes. (Heat running)
7. When less than 3.20 mV : Readjust the trimming resistor above so that the voltage becomes 4.5 mV to 5.0 mV.

When 3.30 mV to 5.20 mV : Not necessary to adjust.

HTP-670

When 5.21 mV to 10.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.0 mV to 5.5 mV.
When 10.1 mV to 20.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.6 mV to 6.0 mV.
8. Disconnect the power cord from the AC outlet.
9. Disconnect the DC voltmeter.

Trimming resistor

R544

Test point
P531

100 ohm
(1/4W)

DC voltmeter

o

Test point 00

P531

O

MAIN PC board ass'y "NAAF-8829"

Test point
P631

Short

Page 7

HTP 670

- - - - - - - - - - - - - - - - - - - - - - I - THE COMPONENTS IDENTIFIED av MARK A ARE CRITICAL FOR SAFErv
' LINE INPUT I NAAF.8829_|- REPLACE ONLY WITH PART NUMBER SPECIFIED.
0301(1/2) _ _ _ - VOLTAGE (MEASURED WITH VOLTMEIER) (:IIS DC VOLTAGEINO INPUT SIGNAL).
NJM4555LD MAI N PC BOARD - ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015GR UNLESS OTHERWISE NOTED.
R301 5 - ALL NPN TRANSISTORS ARE EOUIVALENTTO 2SC181576R UNLESS OTHERWISE NOTED.
| 1K 3 T 1 R307 ' - ALL DIODES ARE EOUIVALENTTO 153133 UNLESS OTHERWISE NOTED.
22K - ELECTROLYTIC CAPACITORSI .a: )ARE IN uF/WV.
% 2 2 - ALL CAPACITORS ARE IN pF/SOWV UNLESS OTHERWISE NOTED.
V 0302 4
- RI § 47450 R305 ID EX) 0307 30F 3307 aapF 3317 330m: 3337 0.033uF
I §==6 I: m A» x g 2; I - ALL RESISTORS ARE IN OHMS1/4wATTS UNLESS OTHERWISE NOTED.
g g m 33K '3 I: 1 . THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OFTHE PARTS.
V N x o " EX) PRINTING SIDE
,2 ll /
V E SE 9383 - CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
I EN NC : No mount of parts. I
3:;ng CAUTION
FOR CONTINUED PROTECTION
I AGAINST FIRE HAZARD, REPLACE
I - - -| ONLY WITH FUSE OF SAME TYPE
I AND RATING INDICATED.
ATTENTION
I AFlN DASSURER UNE PROTECTION
R505 R506 R511 A R513A I FERMANENTE CONTRE LES RISOUES
1K 1K 82 0509 82 051B D'INCENDIE. REMPLACER UNIQUEMENT
(1/4W) (1/4W) (1/4W) 25Ag49_y (1/4WI 23022354! PAR UN FUSIBLE DE MEME TYPE
@ 0 ET CALIBRATION COMME INDIOUE.
46 513
I KB 0517
6505 amass-s 4% A - IEE
23A949-Y R541 R517 0515 25C5359'0/R THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
O 8 820 3.3K ZSC5171 W THATTHE FUSE USED IS SLOW OPERATING TVPE
' 8:: In II) FOR CONTINUED PROTECTION AGAINST FIRE
I 0 H525 HAZARDREFLACE WITH SAME TYPE FUSE. FOR FUSE
0501 0502 390 5 | RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
2SC2240-EIL 2802240-BL 4% 0517?: (1/2W) E
0501 R501 m (I; Q 0505 0541 10/50 3 I SPEAKER FR.
R951 +5 ® @ II 2503423 "33 CE SVMBOLE INDIQUE OUE LE FUSIELE UTLISE EST
I 0 3 3K (2W) l47/50 1K _I_C§03 020 I g I E LENT.POUR UNE PROTECTION PERMANENTEINUTILISER
' m QUE DES FUSIELES DE MEME TYPE. CE DARNIER EST
5 C951 2 Kg 0502 R453}? 224} R507 R515 R542 a g CSZGE I- 4 % INDIOUE LA 00 LE PRESENT SYMBOL EST APPOSE.
220/16 E o POWER NEEDTO CONFIRM g 0 NC R521 R522 33K 12K 50 8 E 10/50 3
I g . z 220 220 23,13ng In? 25A1987-O/R R533
0 - R516 w R543
0952 311% R503 R509 0 Egg , I 160 mg 3-3,) 'm POWER TRANSFORMER
a 1K
220/16 N 5.6K PC BOARD
'- R952 , -1.6 Q
- 2 mm A R398 AN. IIIIIII'ST' .% (£514 0519 m POWER SWITCH
. g R527 " 224 - _ -
g 0503 270 (1/4w) 0519 2SA1930 I -| pc BOA R D
c I- R510 ZSCZZAO-EL MMO NAPS-8831 I- - _ _ _
x 8 0527 100K ED 28A965-V C520 _ _ ' I
a c: 50: _g 224 1 6A/250V I NASW-8833
I 1: g -> a C504 __ I T901 & ' ' '
«3 Il R504 i 220/16 R514 - F901 MMO
m E o 2 2K R512 0514 I NPT-1566M
E K g 2 ' $ 68 62 (1/4w) 101 5 P9063
9 (1/4w) 8 A: I
L pgm fl 5901 POWER
I W. L SWITCHJ
m I - _ - -
E I 40
S 5 $ 5% I P902A P901
\ m m
. 25 o . . A
_ Q9 AC 220-240V 50/60H2
§ 8 0301(2/2) I
.n n: NJM4556LD 0603 0606
KRA103Mf 5.0 R624 _ _ _ _ _ _l
' 5 a PSGSJISS 23C17AOS-S ' 100K I
T 7 .1 R610 V5 R619 P631 D902
7. RL1N4003
/ R335 5% 2 ® 2;} D606 R904 I901 £51040an m POWER TRANSFORMER
4 0 <6 n A
I R603 m 93 ox, g g I: 0607 R623 70-05 163133 1K 620(1wI 0903 E PC BOARD
3:3? 0 n: ZSABSSS 100K R627 I (2) RL1N4003 8 ,3 I: ' _ _ _ _ _I
150K 0 e 470K Q 630K R623 m R902 orGP104003E D901 m:% o MDC NAPS-8831
H K "I I) 40-1 R620 fl? 0605 0608 W 330K 3 If m I: DasaAzo 0 E 2 _ _ I
I 0601 D602 E z 0602 120K 63 I 2SA9336 2SC1740S-S Ki E § § 820(1W) «_ - 3 ONLY
x m It MTZJ2.7B MTZJ2.7B KRC103M H313 Dsos R611; 100K % R626 Rift? E o 6 I
8 8 8 8 1SS133 2 2M 0609 $0909 a (
- 0E '- II J x N R621 - 06043. NC II 22/50 3:5 C905 01 5A/125v I
8 3-8 3 5 R615 R616 1K R622 $8602: 335;: g S 3 8 F901
I 8!: § I: 22K 100K 10K R701 0 E ELF ' '
C950 NC $ 3 i
I.
104/50 1' ""L. 65 Aio 1 <
1 D6717: E g 0906 8 E
' 115.513.3 : 55: E: F P902A P901 &
P632A g g m-- 3 o
M o o o E 2 AC 120V/60Hz
BLUE RED 3 f8 3 I
LED I
. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _I _ _ _ _ _ _l